- 责任者：Yin Jiyuan (State Key Laboratory of Continental Tectonics and Dynamics ; Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Chen Wen
- 刊名：Geochimica
- 出版年：2013
- 卷期：42(5)
- 关键词：侵入体 ; intrusions ; 铀—铅计时 ; U-Pb dating ; 新疆 ; Xinjiang
- 页码：p.414-429
- 图表：7 illus., 2 tables, 35 refs.
- 分类号：0801
- issnNo：ISSN0379-1726
- isbnNo：CN44-1398/P
Voluminous Late Paleozoic plutons distributed throughout the West Junggar region provide critical information for the Phanerozoic crustal growth. On the basis of new zircon U-Pb dating on seven plutons in the Northern West Junggar region, in association with the previous zircon U-Pb ages, the plutons can be divided into two groups： Early Carboniferous （ca. 346 to 321 Ma）, Late Carboniferous-Early Permian （ca. 316 to 281 Ma）. The Early Carboniferous plutons mainly consist of 1-type granites and only occur in Zharma-Saur volcanic arc, and may be related to the southward subduction of the Irtysh-Zaysan Ocean. Late Carboniferous-Early Permian plutons are widely distributed in the northern and southern parts of the West Junggar region. The plutons composed of A-type granites, Charnockites, adakites, magnesian diorites, which indicate a high-temperature and extensional setting. All these suggest that ridge subduction and slab window formation are likely an important mechanism for the generation of the Late Carboniferous-Early Permian plutons in the West Junggar region.